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Contents
module Spotlight
# Creates solr documents for the documents in a resource
class SolrDocumentBuilder
def initialize(resource)
@resource = resource
end
attr_reader :resource
delegate :exhibit, :document_model, to: :resource
##
# @return an enumerator of all the indexable documents for this resource
def documents_to_index
data = to_solr
return [] if data.blank?
data &&= [data] if data.is_a? Hash
return to_enum(:documents_to_index) { data.size } unless block_given?
data.lazy.reject(&:blank?).each do |doc|
yield doc.reverse_merge(exhibit_solr_doc(doc[unique_key]).to_solr)
end
end
protected
##
# @abstract
# Convert this resource into zero-to-many new solr documents. The data here
# should be merged into the resource-specific {#to_solr} data.
#
# @return [Hash] a single solr document hash
# @return [Enumerator<Hash>] multiple solr document hashes. This can be a
# simple array, or an lazy enumerator
def to_solr
spotlight_resource_metadata_for_solr
end
private
# Null object for SolrDocument
module NilSolrDocument
def self.to_solr
{}
end
end
##
# Get any exhibit-specific metadata stored in e.g. sidecars, tags, etc
# This needs the generated solr document
# @returns [#to_solr] something that responds to `to_solr'
def exhibit_solr_doc(id)
return NilSolrDocument unless document_model || id.present?
document_model.build_for_exhibit(id, exhibit)
end
def unique_key
if document_model
document_model.unique_key.to_sym
else
:id
end
end
def spotlight_resource_metadata_for_solr
{
Spotlight::Engine.config.resource_global_id_field => (resource.to_global_id.to_s if resource.persisted?),
document_model.resource_type_field => resource.class.to_s.tableize
}
end
end
end
Version data entries
11 entries across 11 versions & 1 rubygems